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cent comments prof dr mircea orasa on there s no such t prof dr mircea orasa on cooling in a drought argan oil on is burning biomass valentina on carbon capture viable or just website on cars running on compressed there s no such thing as clean coal a liberal s take on liberal stupidity posted on september 4 2009 by jkace clean coal everyone s talking about it well every politician in america is talking about it at least and i can t blame them being able to clean up and fully utilize north america s most abundant energy resource is very enticing but is it possible you may have seen commercials recently for thisisreality org that poke fun at the coal industry for being in denial about coal there s no such thing as clean coal listen i m as liberal as they come thisisreality org has the planet s best interests at heart but have really lowered themselves by bending facts and making generalizations they have a page devoted to the facts of clean coal little one liners from various groups that make coal seem awful i was originally planning to write about purgen a new ccs power plant being proposed for linden nj after visiting thisisreality org however i feel compelled to respond to their facts about clean coal http action thisisreality org facts burning coal is a leading source of global warming pollution coal is a leading source of global warming pollution but also generates over half of the electricity in the us it is also consumed more than any other energy source internationally www eia doe gov burning coal is the dirtiest way we produce electricity this is true everyone knows that coal is dirty now coal contains more carbon per unit energy than any other fuel when energy is released from coal co2 is formed this is unavoidable clean coal in concept takes this co2 captures it and stores it somewhere ccs carbon capture and storage is completely novel at the scale necessary to make a dent into coal co2 emissions there are no homes in america powered by clean coal this is the equivalent of saying that nasa should never have developed a space program because not a single human being has ever been to the moon as i just mentioned ccs and clean coal technologies are new and have not been implemented in the united states yet several projects do exist internationally however co 2 emissions from u s coal based electricity are greater than emissions from all the cars and trucks in america i really hate baseless comparisons like this cow farts release more greenhouse gasses than all the cars and trucks in america the coal industry is spending millions advertising clean coal but not a single clean coal power plant exists in the u s today in no small part due to close minded organizations like thisisreality org while you might have heard the phrase clean coal during the presidential campaign it s actually an oxymoron this is a quote from brian williams on nbc news oh well if brian williams says so it must be true there are roughly 600 coal plants producing electricity in the u s not one of them captures and stores its global warming pollution you already said this clean coal is like a healthy cigarette nice analogy but the quote is from an environmental law attorney from south carolina he s probably won a lot of lawsuits saying things like this there is not a single large scale demonstration clean coal plant in the u s today third time saying this virtually all the new coal plants that have been proposed will just like their predecessors release 100 percent of the co 2 they produce into the atmosphere where it will linger and contribute to global warming this one might be the worst its taken from a report from the union of concerned scientists about coal power and it s future the exact quote is taken from the section of the report discussing non ccs plants the report actually recommends that ccs demonstration projects be implemented throughout the united states although carbon sequestration has been the subject of considerable research and analysis it has yet to be demonstrated in the form of commercial scale fully integrated projects at coal fired power plants same source as the last fact this is not a defeatist statement this is a hopeful statement they want these projects to be demonstrated in fact several ccs projects already exist internationally although admittedly not at the scale we need an investment in wind power produces nearly four times as many jobs as the same investment in coal power and an investment in solar pv power produces almost twice as many jobs and building retrofits more than seven times as many jobs as coal power the first fact to actually show some merit this is arguable but i m willing to concede this fact to them we don t have a plant here in the united states today that has commercially installed carbon capture technology sigh without the price on greenhouse gas emissions that is delivered by cap and trade mechanisms co 2 capture and storage will remain a daydream agreed ccs is not economically viable unless a dollar value is added to carbon emissions this in no way demerits ccs potential i m not trying to say that ccs is the end all be all miracle cure for all of our energy problems in fact i really don t think ccs will make a huge impact at scale coal is still and will always be our dirtiest fuel source the point is that i m being open minded and willing to look at the facts the science the past experience of ccs projects i m willing to look at the fact that china is putting up a new coal fired plant every 2 weeks the coal s going to get burnt why not use it as efficiently and cleanly as we possibly can anyone who blindly rejects coal as the cigarette of energy sources simply does not know that much about energy period next post will be more engineer y i promise filed under uncategorized 13 comments witricity posted on august 28 2009 by prakashrao1 the idea for wireless electricity has been around for a while but the nuts and bolts of it have been difficult to hash out a company inspired by work at mit witricity has made an adapter of sorts that plugs into a wall acts as a wireless transmitter and sends electricity to devices such as tvs and phones the great part of the video is he shows it works considering the obvious market barriers such as high costs and public scrutiny over safety do you guys see this a game changing technology plugging things in is annoying and batteries are bad for the environment and very expensive perhaps the more interesting question is do you guys see this as being something that can be scaled up to transmit power directly from the plant to cities and homes the advantages of wireless transmission on grid congestion would be immense questions to think about would be how far can the electricity be transmitted what would be the limiting factors would this make our grid more or less susceptible to attack we probably would be much safer from the grid crippling squirrels losses in transmission would be interesting to look at what sort of currents would be induced in motors or anything with windings caught in the path of the field lot of questions would love to hear what everyone thinks filed under uncategorized 2 comments detonation cycle gas turbine aka engine turbine hybrid posted on august 18 2009 by jkace get out your cook meters folks we got a live one a new engine design patented by turbine truck engines inc tte takes the best aspects of turbines and engines and attempts to synergize them currently in the 5th generation of design the eng bine maybe tur gine boasts no pistons or valves and uses no lube oil filters or pumps uses over 30 less fuel than current engine technologies significantly reduces nitrogen oxide no no 2 n 2 o 2 and carbon monoxide co emissions operates on all fuels hydrocarbon hydrogen and synthetic has flex fuel and mixed fuels capability has few moving parts requiring less maintenance has a high power to weight ratio is lightweight less than 2 lbs per hp is air cooled has cold start capability now we ve seen cooky engine designs before but a couple things stand out about the dc gt first turbine truck engines inc is a publicly traded company tteg that just formed an alliance with a premier chinese manufacturing company tianjin outsky technology inc secondly the upside is tremendous the flex fuel capability combined with the potential increases in fuel efficiency make this engine a revolutionary product it also holds promise as a low maintenance alternative to traditional engines i could also see this product with applications in electricity production the quick start up time and high efficiency make it an ideal candidate for hybrid renewable power systems so how does it work instead of using pistons a turbine that looks almost like a pelton wheel is spun by carefully timed combustion in the eic chambers air is supplied by a single blower fuel is supplied by separate fuels lines for each chamber they claim that the timing is a result of the different lengths of fuel lines as shown below the chamber at the end of the blue arrows will detonate first since the line is shorter not sure if i buy this once combustion occurs the backpressure through the air line causes the second combustion chamber to recieve the next dose of air fuel the second chamber then detonates sending the air fuel back to the first chamber rinse repeat there are a couple of things that worry me about the system especially since i just bought a bunch of their stock why is it running at 16 000 rpms it seems like they re testing the product unloaded it would be interesting to see the engine run with a load on the system the engine sounds absurdly loud the ceo was formerly a real estate developer any thoughts jk filed under uncategorized 8 comments energy efficiency big upside low sex appeal posted on august 10 2009 by jkace a report was released recently from mckinsey company one of the if not the most prestigous management consulting firms worldwide regarding the potential cost savings of energy efficiency projects in the united states this incredibly in depth study has been refined over the past few years and provides hard evidence that there s plenty of work out there for people in the energy industry i ll give you the meat potatoes mckinsey projects that an investment of 520 billion over the next 10 years will yield a gross savings of 1 2 trillion by 2020 that an npv of 680 billion here s an idea of the scale we re talking about for a better idea lets talk about what one could do with 680 billion dollars pay for the entire iraq war from day one to today you d have an extra 7 5 billion to buy yourself a few gumballs pay for all of the us s social security for a year with 100 billion left over host 3 700 my super sweet 16 parties so why haven t these savings been realized yet a lot of reasons structural financial and cultural structural our economy is set up in a way that demeans the true cost of energy use financial there s simply not enough capital to invest in non growth projects cultural people just don t care there is no sex appeal in efficiency the current green movement in the united states is so much more about glitz and exposure than real definitive environmental impact let s illustrate this with an example which is better for the environment a prius or a programmable thermostat a prius saves about 6 000 lbs year of carbon emissions over a traditional mid sized sedan a programmable thermostat will save about 1 700 lbs year over a traditional thermostat in general a hybrid costs about 8 000 more than a traditional mid sized sedan a programmable thermostat costs about 20 more than a traditional one in other words you can pay 1 30 per pound of carbon reduced by buying a prius or you can pay 0 01 per pound for the thermostat unfortunately you can t drive your programmable thermostat around town to show everyone how green you are filed under uncategorized 1 comment downsizing dilemmas posted on january 7 2009 by ruboomer why can some things that work on the lab bench fuel cells for example have difficulty scaling up in size topic for a long post for fuel cells it is about cost piling stacks upon stacks does not allow for economies of scale what interests me today is downsizing things that work on big scales what problems do we get when we try to make them small case in point are gasifiers successfully built at grand scale igcc power plants there are frightfully few examples that work economically on the small scale why i will throw out two first small scale systems will startup and shutdown frequently which is a problem with gasifiers that need perfect temperatures second and along the same lines small gasifiers will behave more three dimensionally because of their limited size there will necessarily be horizontal gradients in temperature for example which can be ignored in monster sized vessels others filed under uncategorized 1 comment carbon capture viable or just another parasitic load posted on september 16 2008 by blakeboyer carbon capture plant opens in germany amid reservations großansicht des bildes mit der bildunterschrift the plant in eastern germany near the polish border is the only one of its kind in the world energy giant vattenfall has launched an emissions free coal fired test plant near berlin using a technology touted as a huge potential breakthrough in the fight against global warming but critics aren t convinced swedish energy utility vattenfall sees carbon capture and storage ccs as a revolutionary answer to global warming which is largely blamed on carbon dioxide released when fossil fuels burn this technology will become more important than offshore wind farms said vattenfall boss lars josefsson our project at schwarze pumpe puts us at the forefront of this technology in the world said tuomo hatakka the chief executive of vattenfall europe referring to the the 70 million euro plant in eastern germany vattenfall one of europe s largest energy companies hopes the project will help provide energy security through plentiful coal supplies while avoiding the co2 emissions that are blamed for global warming vattenfall underscores clean technology aspect a finnish born executive who heads the swedish group s berlin based subsidiary hatakka told german newspaper frankfurter allgemeine zeitung the process was viable because companies will have to buy eu allowances for every ton of carbon dioxide they release into the air bildunterschrift großansicht des bildes mit der bildunterschrift the ccs test plant has drawn prominent visitors including chancellor merkel in tandem with eu wide trading in emission rights ccs will be economic at 30 to 35 euros per emission certificate the technology breaks even he said the 30 megawatt pilot plant at schwarze pumpe in the lausitz region of eastern germany is very small compared to conventional power stations but it s the first coal fired power plant in the world ready to capture and store its own carbon dioxide emissions a so called...